ieee1394: remove unused struct member from highlevel API

struct hpsb_highlevel's struct module *owner is neither used by the IEEE
1394 core nor set by any of the in-tree drivers or the two out-of-tree
highlevel drivers I know about (dfg1394, mem1394) --- nor is this member
documented.  An unscheduled removal seems acceptable.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/ieee1394/highlevel.h b/drivers/ieee1394/highlevel.h
index 50f2dd2..4b33011 100644
--- a/drivers/ieee1394/highlevel.h
+++ b/drivers/ieee1394/highlevel.h
@@ -24,7 +24,6 @@
 /* Only the following structures are of interest to actual highlevel drivers. */
 
 struct hpsb_highlevel {
-	struct module *owner;
 	const char *name;
 
 	/* Any of the following pointers can legally be NULL, except for